Systematics of Laccaria (Agaricales) in the continental United States and Canada, with discussions on extralimital taxa and descriptions of extant types / Gregory M. Mueller.

n.s. no.30(1992)

Tropical American plants, XII / Louis O. Williams.

v.34:no.8(1972)

Useful plants of the Siona and Secoya Indians of eastern Ecuador / William T. Vickers, Timothy Plowman.

n.s. no.15(1984)

Pteridophyta of Peru. Rolla M. Tryon, Robert G. Stolze.

n.s. no.22(1989)

Eplingia, a new genus of the Labiatae from Mexico [by] Louis O. Williams.

v.36:no.3(1973)

Five new species of Brunfelsia from South America (Solanaceae) / Timothy Plowman.

n.s. no.8(1981)

New species from South America, I-

v.36:no.1(1972)

Falkland Islands (Islas Malvinas) Hepaticae and Anthocerotophyta : a taxonomic and phytogeographic study / John J. Engel.

n.s. no.25(1990)

Flora of Peru / Alwyn H. Gentry, Dillon Michael O., and Jones Samuel B.

n.s. no.5(1980)

Flora of Peru. Michael O. Dillon.

n.s. no.11(1982)

A revision of the South American species of Brunfelsia (Solanaceae) / Timothy C. Plowman ; S. Knapp and J.R. Press, editors.

n.s. no.39(1998)

Studies of American plants. by Paul C. Standley.

v.8:no.3(1930)

Pteridophyta of Peru. Rolla M. Tryon, Robert G. Stolze ; contributed by Alan R. Smith.

n.s. no.29(1992)

Spermatophytes, mostly Peruvian. by J. Francis Macbride.

v.8:no.2(1930)

Flora of Peru. Michael O. Dillon.

n.s. no.10(1982)